Cognomen Jankowicz (Jankowicz 
) , in the entire world, is a rare family name. The family name Jankowicz is characteristic of Poland, where it is quite a rare surname, Austria, where it is a rare surname, and Ireland. Measured by absolute frequency, this name is the most popular in Poland, Argentina, and the United States. Likewise, Jankowicz is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Jankowicz | Germany, Austria, United States, Poland, Argentina |
| jan jankowicz Polish sportsperson, PL (b. 1932) |
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| eleonora jankowicz PL (b. 1923) |
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nina jankowicz American cybersecurity expert, academic and author of Ukrainian descent, US (b. 1989) |
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| a. d. jankowicz (b. 1946) |
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| damian jankowicz researcher |
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| robert jankowicz correspondence chess player |
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| mia jankowicz Egyptian writer, art director and curator, EG |
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| grzegorz jankowicz PL (b. 1978) |
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| katrin jankowicz |
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